CN114884177A - Charging and power supplying device and charging and power supplying method for electric vehicle - Google Patents

Charging and power supplying device and charging and power supplying method for electric vehicle Download PDF

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Publication number
CN114884177A
CN114884177A CN202210662647.5A CN202210662647A CN114884177A CN 114884177 A CN114884177 A CN 114884177A CN 202210662647 A CN202210662647 A CN 202210662647A CN 114884177 A CN114884177 A CN 114884177A
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CN
China
Prior art keywords
charging
relay
charging port
electric vehicle
battery pack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210662647.5A
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Chinese (zh)
Inventor
李延定
蒋辛培
李洋
杨喜峰
邝文灏
钱三平
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GAC Aion New Energy Automobile Co Ltd
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GAC Aion New Energy Automobile Co Ltd
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Publication date
Application filed by GAC Aion New Energy Automobile Co Ltd filed Critical GAC Aion New Energy Automobile Co Ltd
Priority to CN202210662647.5A priority Critical patent/CN114884177A/en
Publication of CN114884177A publication Critical patent/CN114884177A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Abstract

The application provides a charging and power supplying device and a charging and power supplying method of an electric vehicle, wherein the charging and power supplying device of the electric vehicle comprises: the charging system comprises a first charging port, a second charging port, a main positive relay and a main negative relay, wherein the main positive relay and the main negative relay are electrically connected with the first charging port and a battery pack of the electric vehicle and form a first charging loop with the first charging port and the battery pack of the electric vehicle; the main positive relay and the second charging port and the battery pack of the electric vehicle form a second charging loop, wherein when the second charging port is connected with the external power supply, the main positive relay and the main negative relay are both closed to charge the battery pack of the electric vehicle based on the second charging port. This application can be compatible fill soon and fill two kinds of charging methods slowly, and this application has that the part changes advantage little, with low costs simultaneously.

Description

Charging and power supplying device and charging and power supplying method for electric vehicle
Technical Field
The application relates to the technical field of charging and power supplying of electric vehicles, in particular to a charging and power supplying device and a charging and power supplying method of an electric vehicle.
Background
At present, the electric vehicle can not be adapted to two charging piles with different voltages on the market, so that the two charging modes of quick charging and slow charging can not be compatible.
Disclosure of Invention
An object of the embodiment of the application is to provide a charging and power supplying device and a charging and power supplying method for an electric vehicle, which are compatible with two charging modes of fast charging and slow charging, and meanwhile, the electric vehicle has the advantages of small part change and low cost.
To this end, the present application provides in a first aspect a charging and power supplying apparatus for an electric vehicle, wherein the charging and power supplying apparatus includes:
the charging system comprises a first charging port and a second charging port, wherein the first charging port is a fast charging port, and the second charging port is a slow charging port;
the main positive relay and the main negative relay are electrically connected with the first charging port and a battery pack of the electric vehicle and form a first charging loop with the first charging port and the battery pack of the electric vehicle, wherein when the first charging port is connected with an external power supply, the main positive relay and the main negative relay are both closed so as to charge the battery pack of the electric vehicle through the first charging port;
the main positive relay and the main negative relay are further electrically connected with the second charging port and form a second charging loop with the second charging port and a battery pack of the electric vehicle, wherein when the second charging port is connected with an external power supply, the main positive relay and the main negative relay are both closed so as to charge the battery pack of the electric vehicle based on the second charging port.
In this optional embodiment, through integrated first charging port and second charging port, and then when first charging port is connected with external power supply, through main positive relay and main negative relay all closed, can make first charging port charge to the battery package of electric motor car, and when second charging port is connected with external power supply, through main positive relay and main negative relay all closed, can charge to the battery package of electric motor car based on second charging port, finally realize compatible fast and fill two kinds of charging methods slowly, and simultaneously, compared with the prior art, this application has integrated fast charging circuit at present slow charging circuit, so, just can follow the voltage platform part that fills slowly, and then reduce circuit change and reduce cost.
In a first aspect of the present application, as an optional implementation manner, the apparatus further includes a quick charge relay, wherein the quick charge relay is electrically connected to the first charge port, and forms a first charge loop with the first charge port, a battery pack of the electric vehicle, the main positive relay, and the main negative relay, wherein when the first charge port is connected to an external power source, the main positive relay, the main negative relay, and the quick charge relay are all closed to charge the battery pack of the electric vehicle based on the first charge port;
when the second charging port is connected with the external power supply, the quick charging relay is disconnected, so that the main positive relay, the main negative relay, the second charging port and a battery pack of the electric vehicle form a second charging loop.
In this optional embodiment, through the quick charge relay, when the first charging port is connected with the external power supply, the main positive relay, the main negative relay and the quick charge relay are all closed, and then the battery pack of the electric vehicle can be charged based on the first charging port. On the other hand, through the quick charge relay, when the second charging port is connected with the external power supply, the quick charge relay is disconnected, so that the main positive relay, the main negative relay, the second charging port and a battery pack of the electric vehicle form a second charging loop. On the other hand, through the disconnection quick charge relay, can avoid first port of charging electrified, and then avoid causing unexpected injury.
In the first aspect of the present application, as an optional implementation manner, the apparatus further includes a pre-charge relay and a pre-charge resistor, wherein one electrical end of the pre-charge relay is electrically connected to the main positive relay, and the other electrical end of the pre-charge relay is electrically connected to the pre-charge resistor, and the pre-charge relay and the pre-charge resistor are used to step up the load terminal voltage of the main positive relay.
In the optional embodiment, the load terminal voltage of the main positive relay can be gradually increased through the pre-charging relay and the pre-charging resistor, so that the pressure difference between the front end and the rear end of the main positive relay is avoided, and the adhesion caused by the large current generated in the closing moment is further avoided.
In the first aspect of the present application, as an optional implementation manner, the apparatus further includes a bidirectional DCDC unit, where the bidirectional DCDC unit is electrically connected to the battery pack of the electric vehicle, the electric vehicle load, and the second charging port, and the bidirectional DCDC unit is configured to convert an operating voltage of the second charging port into an operating voltage of the battery pack of the electric vehicle, or convert an operating voltage of the battery pack of the electric vehicle into an operating voltage of the electric vehicle load.
In this alternative embodiment, the operating voltage of the second charging port can be converted into the operating voltage of the battery pack of the electric vehicle or the operating voltage of the battery pack of the electric vehicle into the operating voltage of the electric vehicle load by the bidirectional DCDC unit.
In the first aspect of the present application, as an alternative implementation, the operating voltage of the electric vehicle load includes one of a voltage of 12V and a voltage of 500V.
In this alternative embodiment, the operating voltage of the battery pack may be converted to a 12V voltage, 500V voltage by the bidirectional DCDC unit, thereby increasing the power supply for the load on the electric vehicle.
In the first aspect of the present application, as an alternative implementation, the operating voltage of the battery pack is 750V.
In the present alternative embodiment, the 750V voltage can be converted into the 12V voltage and the 500V voltage by the bidirectional DCDC unit.
In the first aspect of the present application, as an optional implementation manner, the operating voltage of the second charging port is 500V, and the operating voltage of the first charging port is 750V.
In this optional embodiment, since the operating voltage of the second charging port is 500V, and the operating voltage of the first charging port is 750V, the device of the present application is compatible with two voltage platforms, namely 750V and 500V.
The second aspect of the present application discloses a charging and power supplying method, which is applied to the charging and power supplying device of the first aspect of the present application, wherein the method includes:
when detecting external power source and first charging port electric connection, control main positive relay, main negative relay, fill the relay all closed soon to charge to the battery package of electric motor car based on first charging port.
In this application second aspect, when detecting external power source and first charging port electric connection, all close through control main positive relay, main negative relay, quick charge relay, can charge to the battery package of electric motor car based on first charging port.
In the second aspect of the present application, as an optional implementation, the method further includes:
when detecting external power source and second charging port electric connection, control main positive relay and main negative relay are closed, and the relay disconnection that charges soon to charge to the battery package of electric motor car based on the second charging port.
In this optional embodiment, when detecting that the external power source is electrically connected to the second charging port, the quick charging relay is turned off by controlling the main positive relay and the main negative relay to be closed, and the battery pack of the electric vehicle can be charged based on the second charging port.
In the second aspect of the present application, as an optional implementation, the method further includes:
when the first charging port and the second charging port are detected not to be electrically connected with an external power supply and the electric vehicle is in a running state, the main positive relay and the main negative relay are controlled to be closed, and the quick charging relay is controlled to be disconnected so as to supply power to a load of the electric vehicle through a battery pack of the electric vehicle.
In this optional implementation, when detecting that first charging port and second charging port are not all connected with external power source electric, and the electric motor car is in the running state, through controlling main positive relay and main negative relay to close, the relay disconnection that charges soon, and then can supply power to the load of electric motor car through the battery package of electric motor car.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic circuit structure diagram of a charging and power supplying device of an electric vehicle disclosed in an embodiment of the present application;
fig. 2 is an operation schematic diagram of a charging and power supplying device of an electric vehicle disclosed in an embodiment of the present application;
fig. 3 is an operation schematic diagram of another charging and power supplying device for an electric vehicle disclosed in the embodiment of the present application;
fig. 4 is an operation schematic diagram of a charging and power supplying device of another electric vehicle disclosed in the embodiment of the present application;
fig. 5 is a schematic flowchart of a charging method according to an embodiment of the present application.
Icon: 1-a battery pack; 2-a first charging port; s1-main positive relay; s2-a pre-charging relay; s3-main negative relay; 3-a second charging port; a 4-bidirectional DCDC unit; 5-load of the electric vehicle; r1-precharge resistor.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Examples
Referring to fig. 1, fig. 1 is a schematic circuit structure diagram of a charging and power supplying device of an electric vehicle disclosed in an embodiment of the present application, and as shown in fig. 1, the charging and power supplying device in the embodiment of the present application includes:
the charging system comprises a first charging port 2 and a second charging port 3, wherein the first charging port 2 is a fast charging port, and the second charging port 3 is a slow charging port;
the main positive relay S1 and the main negative relay S3, the main positive relay S1 and the main negative relay S3 are electrically connected to the first charging port 2 and the battery pack 1 of the electric vehicle, and form a first charging loop with the first charging port 2 and the battery pack 1 of the electric vehicle, wherein when the first charging port 2 is connected to an external power source, the main positive relay S1 and the main negative relay S3 are both closed to charge the battery pack 1 of the electric vehicle through the first charging port 2;
the main positive relay S1 and the main negative relay S3 are also electrically connected to the second charging port 3, and form a second charging loop with the second charging port 3 and the battery pack 1 of the electric vehicle, wherein when the second charging port 3 is connected to an external power source, both the main positive relay S1 and the main negative relay S3 are closed to charge the battery pack 1 of the electric vehicle based on the second charging port 3.
In this optional embodiment, through integrating first charging port 2 and second charging port 3, and then when first charging port 2 is connected with external power supply, through main positive relay S1 and main negative relay S3 all closed, can make first charging port 2 charge to the battery package 1 of electric motor car, and when second charging port 3 is connected with external power supply, through main positive relay S1 and main negative relay S3 all closed, can charge to battery package 1 of electric motor car based on second charging port 3, finally realize compatible fast and slow charging two kinds of charging methods, simultaneously, compared with the prior art, this application has integrated fast charging circuit at present slow charging circuit, so, just so, can follow the voltage platform part that slowly charges, and then reduce the circuit and change and reduce the cost.
In the embodiment of the present application, as an optional implementation manner, the charging and supplying device further includes a quick charging relay, wherein the quick charging relay is electrically connected to the first charging port 2, and forms a first charging loop with the first charging port 2, the battery pack 1 of the electric vehicle, the main positive relay S1, and the main negative relay S3, wherein when the first charging port 2 is connected to an external power source, the main positive relay S1, the main negative relay S3, and the quick charging relay are all closed, so as to charge the battery pack 1 of the electric vehicle based on the first charging port 2;
when the second charging port 3 is connected with the external power supply, the quick charging relay is disconnected, so that the main positive relay S1, the main negative relay S3, the second charging port 3 and the battery pack 1 of the electric vehicle form a second charging loop.
In this optional embodiment, through the quick charge relay, when the first charging port 2 is connected to the external power supply, the main positive relay S1, the main negative relay S3, and the quick charge relay are all closed, and then the battery pack 1 of the electric vehicle can be charged based on the first charging port 2. On the other hand, with the quick charge relay, when the second charging port 3 is connected to the external power supply, the quick charge relay is turned off, so that the main positive relay S1, the main negative relay S3, the second charging port 3, and the battery pack 1 of the electric vehicle form a second charging circuit. On the other hand, through the disconnection quick charge relay, can avoid first port 2 that charges to be electrified, and then avoid causing unexpected injury.
Specifically, the quick charge relay forms a first charging loop with the first charging port 2, the battery pack 1 of the electric vehicle, the main positive relay S1 and the main negative relay S3, and the current flow during the charging process is as indicated by arrows in fig. 2.
Specifically, the main positive relay S1, the main negative relay S3, the second charging port 3 and the battery pack 1 of the electric vehicle form a second charging loop, and the current flow during charging is as shown by the arrows in fig. 3.
Specifically, the main positive relay S1, the main negative relay S3, the second charging port 3 and the battery pack 1 of the electric vehicle form a second charging loop, and the current flow during the power supply to the load is as shown by the arrow in fig. 4.
In the embodiment of the present application, as an optional implementation manner, the charging device further includes a pre-charge relay S2 and a pre-charge resistor R1, wherein one electrical end of the pre-charge relay S2 is electrically connected to the main positive relay S1, the other electrical end is electrically connected to the pre-charge resistor R1, and the pre-charge relay S2 and the pre-charge resistor R1 are configured to step up the load terminal voltage of the main positive relay S1.
In the optional embodiment, the pre-charging relay S2 and the pre-charging resistor R1 can gradually increase the load terminal voltage of the main positive relay S1, so that a voltage difference between the front end and the rear end of the main positive relay S1 is avoided, and adhesion caused by a large current generated at the moment of closing is avoided.
In the embodiment of the present application, as an optional implementation manner, the charging and supplying device further includes a bidirectional DCDC unit 4, the bidirectional DCDC unit 4 is electrically connected to the battery pack 1 of the electric vehicle, the electric vehicle load and the second charging port 3, and the bidirectional DCDC unit 4 is configured to convert an operating voltage of the second charging port 3 into an operating voltage of the battery pack 1 of the electric vehicle, or convert an operating voltage of the battery pack 1 of the electric vehicle into an operating voltage of the electric vehicle load.
In the present alternative embodiment, the operating voltage of the second charging port 3 can be converted into the operating voltage of the battery pack 1 of the electric vehicle or the operating voltage of the battery pack 1 of the electric vehicle into the operating voltage of the electric vehicle load by the bidirectional DCDC unit 4.
In this alternative embodiment, the DCDC unit refers to a dc-to-dc converter, and its specific structure refers to the prior art.
In the embodiment of the present application, as an optional implementation manner, the operating voltage of the electric vehicle load includes one of a voltage of 12V and a voltage of 500V.
In the present alternative embodiment, the operating voltage of the battery pack 1 may be converted into a 12V voltage and a 500V voltage by the bidirectional DCDC unit 4, thereby increasing the power supply for the load on the electric vehicle.
In the embodiment of the present application, as an alternative implementation manner, the operating voltage of the battery pack 1 is 750V.
In the present alternative embodiment, the bi-directional DCDC unit 4 can convert 750V voltage into 12V voltage and 500V voltage.
In the embodiment of the present application, as an optional implementation manner, the operating voltage of the second charging port 3 is 500V, and the operating voltage of the first charging port 2 is 750V.
In this optional embodiment, since the operating voltage of the second charging port 3 is 500V, and the operating voltage of the first charging port 2 is 750V, the device of the present application is compatible with two voltage platforms, 750V and 500V.
In addition, please refer to fig. 5, fig. 5 is a schematic flowchart illustrating a charging and power supplying method according to an embodiment of the present application, wherein the method according to the embodiment of the present application is applied to a charging and power supplying apparatus according to the embodiment of the present application, and as shown in fig. 5, the method according to the embodiment of the present application includes:
101. when detecting external power source and first charging port electric connection, control main positive relay, main negative relay, fill the relay all closed soon to charge to the battery package of electric motor car based on first charging port.
In the embodiment of the present application, when detecting that the external power source is electrically connected to the first charging port 2, the battery pack 1 of the electric vehicle can be charged based on the first charging port 2 by controlling the main positive relay S1, the main negative relay S3, and the quick charging relay to be closed.
In this application embodiment, as an optional implementation manner, the method in this application embodiment further includes:
when detecting that the external power source is electrically connected with the second charging port 3, controlling the main positive relay S1 and the main negative relay S3 to be closed, and the quick charging relay to be opened so as to charge the battery pack 1 of the electric vehicle based on the second charging port 3.
In this alternative embodiment, by controlling the main positive relay S1 and the main negative relay S3 to be closed and the quick charge relay to be open when the external power source is detected to be electrically connected to the second charging port 3, the battery pack 1 of the electric vehicle can be charged based on the second charging port 3.
In this application embodiment, as an optional implementation manner, the method in this application embodiment further includes:
when the first charging port 2 and the second charging port 3 are not electrically connected with the external power supply and the electric vehicle is in a running state, the main positive relay S1 and the main negative relay S3 are controlled to be closed, and the quick charging relay is controlled to be opened so as to supply power to the load 5 of the electric vehicle through the battery pack 1 of the electric vehicle.
In this optional embodiment, when it is detected that the first charging port 2 and the second charging port 3 are not electrically connected to the external power source and the electric vehicle is in the driving state, the main positive relay S1 and the main negative relay S3 are controlled to be closed, the quick charging relay is opened, and then the power can be supplied to the load 5 of the electric vehicle through the battery pack 1 of the electric vehicle.
In this optional embodiment, the load of the electric vehicle may be a motor, a vehicle-mounted charger, a high-pressure air conditioner heater, and a high-pressure air conditioner compressor.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of one logic function, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
It should be noted that the functions, if implemented in the form of software functional modules and sold or used as independent products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above embodiments are merely examples of the present application and are not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A charging and power supplying apparatus for an electric vehicle, the apparatus comprising:
the charging device comprises a first charging port and a second charging port, wherein the first charging port is a fast charging port, and the second charging port is a slow charging port;
the main positive relay and the main negative relay are electrically connected with the first charging port and a battery pack of the electric vehicle and form a first charging loop with the first charging port and the battery pack of the electric vehicle, wherein when the first charging port is connected with an external power supply, the main positive relay and the main negative relay are both closed so as to charge the battery pack of the electric vehicle through the first charging port;
the main positive relay and the main negative relay are electrically connected with the second charging port and form a second charging loop with the second charging port and a battery pack of the electric vehicle, wherein when the second charging port is connected with an external power supply, the main positive relay and the main negative relay are both closed so as to charge the battery pack of the electric vehicle based on the second charging port.
2. The charging and power supplying apparatus according to claim 1, further comprising a quick charging relay, wherein the quick charging relay is electrically connected to the first charging port and forms the first charging loop with the first charging port, the battery pack of the electric vehicle, the main positive relay, and the main negative relay, wherein when the first charging port is connected to an external power source, the main positive relay, the main negative relay, and the quick charging relay are all closed to charge the battery pack of the electric vehicle based on the first charging port;
when the second charging port is connected with an external power supply, the quick charging relay is disconnected, so that the main positive relay, the main negative relay, the second charging port and a battery pack of the electric vehicle form the second charging loop.
3. The charging and power supplying device as claimed in claim 2, further comprising a pre-charge relay and a pre-charge resistor, wherein one electrical terminal of the pre-charge relay is electrically connected to the main positive relay, and the other electrical terminal of the pre-charge relay is electrically connected to the pre-charge resistor, and the pre-charge relay and the pre-charge resistor are used for gradually raising the voltage at the load terminal of the main positive relay.
4. The charging and supplying apparatus according to claim 2, further comprising a bidirectional DCDC unit electrically connected to the battery pack of the electric vehicle, the electric vehicle load and the second charging port, the bidirectional DCDC unit being configured to convert an operating voltage of the second charging port into an operating voltage of the battery pack of the electric vehicle or convert an operating voltage of the battery pack of the electric vehicle into an operating voltage of the electric vehicle load.
5. The charging and power supply device of claim 4, wherein the operating voltage of the electric vehicle load comprises one of a 12V voltage and a 500V voltage.
6. The charging and power supplying device of claim 5, wherein the operating voltage of the battery pack is 750V.
7. The charging and supplying device of claim 5, wherein the operating voltage of the second charging port is 500V, and the operating voltage of the first charging port is 750V.
8. A charging and power supplying method, wherein the method is applied to the method according to any one of claims 2 to 7 and comprises the following steps:
when detecting external power source and first charging port electric connection, control main positive relay, main negative relay, fill the relay all closed soon to charge to the battery package of electric motor car based on first charging port.
9. The charging and power supplying method according to claim 8, wherein the method further comprises:
when detecting external power source and second charging port electric connection, control main positive relay with main negative relay is closed, the relay disconnection that charges soon to charge to the battery package of electric motor car based on the second charging port.
10. The charging and power supplying method according to claim 8, wherein the method further comprises:
when detecting first charging port and second charging port all not with external power source electric connection, just when the electric motor car is in the running state, control main positive relay with main negative relay is closed, the relay disconnection that charges soon, in order to pass through the battery package of electric motor car is to the load power supply of electric motor car.
CN202210662647.5A 2022-06-13 2022-06-13 Charging and power supplying device and charging and power supplying method for electric vehicle Pending CN114884177A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2617169A (en) * 2022-03-31 2023-10-04 Switch Mobility Ltd Improved interface and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2617169A (en) * 2022-03-31 2023-10-04 Switch Mobility Ltd Improved interface and vehicle
GB2617169B (en) * 2022-03-31 2024-04-17 Switch Mobility Ltd Improved interface and vehicle

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